Samsung Galaxy S9 "only official released binaries are allowed to be flashed(RECOVERY)"

Hi, the info is in the Samsung link! Basicly, use the phone. Sim card and 5 minutes calls is mentioned.

They also suggest you can ring Samsung Support. That seems a good idea, since your actual issue is not documented. I guess this solution does not come up on the web much, as not so many are as brave as you to hack a brand new phone? Good luck. :smiley: